u32 level_mask;
spinlock_t lock;
struct gpio_chip chip;
+ struct clk *dbck;
};
#define METHOD_MPUIO 0
return &gpio_bank[gpio >> 5];
if (cpu_is_omap34xx())
return &gpio_bank[gpio >> 5];
+ BUG();
+ return NULL;
}
static inline int get_gpio_index(int gpio)
__raw_writel(l, reg);
}
-void omap_set_gpio_direction(int gpio, int is_input)
-{
- struct gpio_bank *bank;
- unsigned long flags;
-
- if (check_gpio(gpio) < 0)
- return;
- bank = get_gpio_bank(gpio);
- spin_lock_irqsave(&bank->lock, flags);
- _set_gpio_direction(bank, get_gpio_index(gpio), is_input);
- spin_unlock_irqrestore(&bank->lock, flags);
-}
-
static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
{
void __iomem *reg = bank->base;
__raw_writel(l, reg);
}
-void omap_set_gpio_dataout(int gpio, int enable)
-{
- struct gpio_bank *bank;
- unsigned long flags;
-
- if (check_gpio(gpio) < 0)
- return;
- bank = get_gpio_bank(gpio);
- spin_lock_irqsave(&bank->lock, flags);
- _set_gpio_dataout(bank, get_gpio_index(gpio), enable);
- spin_unlock_irqrestore(&bank->lock, flags);
-}
-
-int omap_get_gpio_datain(int gpio)
+static int __omap_get_gpio_datain(int gpio)
{
struct gpio_bank *bank;
void __iomem *reg;
{
struct gpio_bank *bank;
void __iomem *reg;
+ unsigned long flags;
u32 val, l = 1 << get_gpio_index(gpio);
if (cpu_class_is_omap1())
bank = get_gpio_bank(gpio);
reg = bank->base;
-
reg += OMAP24XX_GPIO_DEBOUNCE_EN;
+
+ spin_lock_irqsave(&bank->lock, flags);
val = __raw_readl(reg);
- if (enable)
+ if (enable && !(val & l))
val |= l;
- else
+ else if (!enable && (val & l))
val &= ~l;
+ else
+ goto done;
+
+ if (cpu_is_omap34xx()) {
+ if (enable)
+ clk_enable(bank->dbck);
+ else
+ clk_disable(bank->dbck);
+ }
__raw_writel(val, reg);
+done:
+ spin_unlock_irqrestore(&bank->lock, flags);
}
EXPORT_SYMBOL(omap_set_gpio_debounce);
return retval;
}
-int omap_request_gpio(int gpio)
+static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
{
- struct gpio_bank *bank;
+ struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
unsigned long flags;
- int status;
-
- if (check_gpio(gpio) < 0)
- return -EINVAL;
-
- status = gpio_request(gpio, NULL);
- if (status < 0)
- return status;
- bank = get_gpio_bank(gpio);
spin_lock_irqsave(&bank->lock, flags);
/* Set trigger to none. You need to enable the desired trigger with
* request_irq() or set_irq_type().
*/
- _set_gpio_triggering(bank, get_gpio_index(gpio), IRQ_TYPE_NONE);
+ _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE);
#ifdef CONFIG_ARCH_OMAP15XX
if (bank->method == METHOD_GPIO_1510) {
/* Claim the pin for MPU */
reg = bank->base + OMAP1510_GPIO_PIN_CONTROL;
- __raw_writel(__raw_readl(reg) | (1 << get_gpio_index(gpio)), reg);
+ __raw_writel(__raw_readl(reg) | (1 << offset), reg);
}
#endif
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
}
-void omap_free_gpio(int gpio)
+static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
{
- struct gpio_bank *bank;
+ struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
unsigned long flags;
- if (check_gpio(gpio) < 0)
- return;
- bank = get_gpio_bank(gpio);
spin_lock_irqsave(&bank->lock, flags);
- if (unlikely(!gpiochip_is_requested(&bank->chip,
- get_gpio_index(gpio)))) {
- spin_unlock_irqrestore(&bank->lock, flags);
- printk(KERN_ERR "omap-gpio: GPIO %d wasn't reserved!\n", gpio);
- dump_stack();
- return;
- }
#ifdef CONFIG_ARCH_OMAP16XX
if (bank->method == METHOD_GPIO_1610) {
/* Disable wake-up during idle for dynamic tick */
void __iomem *reg = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA;
- __raw_writel(1 << get_gpio_index(gpio), reg);
+ __raw_writel(1 << offset, reg);
}
#endif
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
if (bank->method == METHOD_GPIO_24XX) {
/* Disable wake-up during idle for dynamic tick */
void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
- __raw_writel(1 << get_gpio_index(gpio), reg);
+ __raw_writel(1 << offset, reg);
}
#endif
- _reset_gpio(bank, gpio);
+ _reset_gpio(bank, bank->chip.base + offset);
spin_unlock_irqrestore(&bank->lock, flags);
- gpio_free(gpio);
}
/*
static int gpio_get(struct gpio_chip *chip, unsigned offset)
{
- return omap_get_gpio_datain(chip->base + offset);
+ return __omap_get_gpio_datain(chip->base + offset);
}
static int gpio_output(struct gpio_chip *chip, unsigned offset, int value)
spin_unlock_irqrestore(&bank->lock, flags);
}
+static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct gpio_bank *bank;
+
+ bank = container_of(chip, struct gpio_bank, chip);
+ return bank->virtual_irq_start + offset;
+}
+
/*---------------------------------------------------------------------*/
static int initialized;
#endif
#if defined(CONFIG_ARCH_OMAP3)
-static struct clk *gpio_fclks[OMAP34XX_NR_GPIOS];
static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
#endif
int i;
int gpio = 0;
struct gpio_bank *bank;
-#if defined(CONFIG_ARCH_OMAP3)
char clk_name[11];
-#endif
initialized = 1;
printk(KERN_ERR "Could not get %s\n", clk_name);
else
clk_enable(gpio_iclks[i]);
- sprintf(clk_name, "gpio%d_fck", i + 1);
- gpio_fclks[i] = clk_get(NULL, clk_name);
- if (IS_ERR(gpio_fclks[i]))
- printk(KERN_ERR "Could not get %s\n", clk_name);
- else
- clk_enable(gpio_fclks[i]);
}
}
#endif
/* REVISIT eventually switch from OMAP-specific gpio structs
* over to the generic ones
*/
+ bank->chip.request = omap_gpio_request;
+ bank->chip.free = omap_gpio_free;
bank->chip.direction_input = gpio_input;
bank->chip.get = gpio_get;
bank->chip.direction_output = gpio_output;
bank->chip.set = gpio_set;
+ bank->chip.to_irq = gpio_2irq;
if (bank_is_mpuio(bank)) {
bank->chip.label = "mpuio";
#ifdef CONFIG_ARCH_OMAP16XX
}
set_irq_chained_handler(bank->irq, gpio_irq_handler);
set_irq_data(bank->irq, bank);
+
+ if (cpu_is_omap34xx()) {
+ sprintf(clk_name, "gpio%d_dbck", i + 1);
+ bank->dbck = clk_get(NULL, clk_name);
+ if (IS_ERR(bank->dbck))
+ printk(KERN_ERR "Could not get %s\n", clk_name);
+ }
}
/* Enable system clock for GPIO module.
return ret;
}
-EXPORT_SYMBOL(omap_request_gpio);
-EXPORT_SYMBOL(omap_free_gpio);
-EXPORT_SYMBOL(omap_set_gpio_direction);
-EXPORT_SYMBOL(omap_set_gpio_dataout);
-EXPORT_SYMBOL(omap_get_gpio_datain);
-
arch_initcall(omap_gpio_sysinit);
continue;
irq = bank->virtual_irq_start + j;
- value = omap_get_gpio_datain(gpio);
+ value = gpio_get_value(gpio);
is_in = gpio_is_input(bank, mask);
if (bank_is_mpuio(bank))
seq_printf(s, "MPUIO %2d ", j);
else
seq_printf(s, "GPIO %3d ", gpio);
- seq_printf(s, "(%10s): %s %s",
+ seq_printf(s, "(%-20.20s): %s %s",
label,
is_in ? "in " : "out",
value ? "hi" : "lo");
/* FIXME for at least omap2, show pullup/pulldown state */
irqstat = irq_desc[irq].status;
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+ defined(CONFIG_ARCH_OMAP34XX)
if (is_in && ((bank->suspend_wakeup & mask)
|| irqstat & IRQ_TYPE_SENSE_MASK)) {
char *trigger = NULL;
(bank->suspend_wakeup & mask)
? " wakeup" : "");
}
+#endif
seq_printf(s, "\n");
}
projects / linux-2.6-omap-h63xx.git / blobdiff